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ANNAPOLIS, Md. (AP) - Maryland voters are going to the polls to choose candidates for governor, attorney general and various state and local offices, but problems have been reported in Montgomery County.

Nine precincts in Montgomery County were reporting errors with electronic poll books used to look up voter names. At one Bethesda polling place, 50 people had to vote on provisional paper ballots by 9 a.m. Election workers were requesting more paper ballots.

Maryland Board of Elections spokeswoman Nikki Charlson says the problem is limited to a few precincts. Voting has been smooth elsewhere.

Voters can cast ballots until 8 p.m. Tuesday.

In the Democratic primary for governor, voters are choosing from Lt. Gov. Anthony Brown, Attorney General Douglas Gansler and Del. Heather Mizeur. There are four candidates in the Republican gubernatorial primary.